WO2021036866A1 - Procédé de formation de nœud composite de caoutchouc liquide comportant un canal d'écoulement de conduit - Google Patents

Procédé de formation de nœud composite de caoutchouc liquide comportant un canal d'écoulement de conduit Download PDF

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Publication number
WO2021036866A1
WO2021036866A1 PCT/CN2020/109803 CN2020109803W WO2021036866A1 WO 2021036866 A1 WO2021036866 A1 WO 2021036866A1 CN 2020109803 W CN2020109803 W CN 2020109803W WO 2021036866 A1 WO2021036866 A1 WO 2021036866A1
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WIPO (PCT)
Prior art keywords
spacer
mandrel
rubber
groove
cover plate
Prior art date
Application number
PCT/CN2020/109803
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English (en)
Chinese (zh)
Inventor
罗俊
刘文松
林胜
蒋仲三
陈俊辉
张玉祥
曾先会
李静
周娟
Original Assignee
株洲时代瑞唯减振装备有限公司
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Publication date
Application filed by 株洲时代瑞唯减振装备有限公司 filed Critical 株洲时代瑞唯减振装备有限公司
Priority to US17/604,446 priority Critical patent/US11661990B2/en
Priority to EP20857772.6A priority patent/EP4023904A4/fr
Publication of WO2021036866A1 publication Critical patent/WO2021036866A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F5/00—Liquid springs in which the liquid works as a spring by compression, e.g. combined with throttling action; Combinations of devices including liquid springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
    • F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
    • F16F13/1445—Units of the bushing type, i.e. loaded predominantly radially characterised by method of assembly, production or treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
    • F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
    • F16F13/1463—Units of the bushing type, i.e. loaded predominantly radially characterised by features of passages between working chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2224/00—Materials; Material properties
    • F16F2224/04—Fluids
    • F16F2224/048—High viscosity, semi-solid pastiness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2232/00—Nature of movement
    • F16F2232/08—Linear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2238/00—Type of springs or dampers
    • F16F2238/02—Springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2238/00—Type of springs or dampers
    • F16F2238/04—Damper

Definitions

  • the invention relates to a method for forming a liquid rubber composite node, in particular to a method for forming a liquid rubber composite node with a pipe body flow channel.
  • the boom node provides greater radial stiffness when running at high speed in a straight line (high-frequency vibration), ensuring operational stability and increasing critical speed; when crossing a curve (low frequency and large amplitude), it provides lower stiffness performance Guarantee the performance of the curve and reduce the wear; ordinary nodes are difficult to achieve the above characteristics, especially for the old line, the wheel rail and line wear is large, and the maintenance cost is high. Therefore, it is necessary to use a new product that also has the above characteristics—liquid rubber composite node.
  • the working principle of the liquid rubber composite rotating arm node mainly by designing two hollow cavity structures inside the rubber component, connecting the two cavities through the flow channel design, and pre-filling and sealing an incompressible (viscous) liquid in a cavity. Under the action of load, the volume in the two cavities changes, and the liquid flows between the two cavities to produce damping, which consumes vibration energy and achieves the purpose of attenuating vibration. During low-frequency vibration, the liquid flows up and down through the channel to achieve a large damping effect. The high-frequency section of the liquid is too late to flow, and the damping value is small, which effectively isolates the vibration, and the dynamic stiffness remains basically stable under high-frequency vibration to prevent dynamic The role of hardening. The frequency ratio of the system remains basically unchanged, and still has a good damping effect.
  • the announcement number is CN102644693A.
  • the Chinese invention patent issued on August 22, 2012 discloses a method for adjusting the dynamic stiffness of a rubber joint with liquid damping. There are more than two enclosed cavities in the rubber joint. The cavity and the enclosed cavity are communicated with each other through a throttle channel, and an adjusting device for controlling the flow area of the throttle channel is arranged on the throttle channel, and the size of the throttle channel is adjusted by the adjusting device to adjust the damping force.
  • Required dynamic stiffness of rubber joints are required dynamic stiffness of rubber joints.
  • the announcement number is CN105501242A, and the announcement date is April 20, 2016.
  • the Chinese invention patent discloses a rubber node, which includes: a mandrel, a jacket and a rubber layer; the rubber layer is filled on the mandrel and the jacket In between, the rubber layer is provided with a first cavity and a second cavity on both sides symmetrical about the mandrel, and the rubber node is provided with a first cavity and a second cavity connecting the first cavity and the second cavity.
  • a communicating channel, the first cavity and the second cavity are filled with liquid and the liquid is not filled with the first cavity and the second cavity.
  • the Chinese utility model patent discloses an axle box node, which includes a mandrel, an elastic sleeve, and a shell. The middle of the mandrel is opened A through hole penetrating the mandrel, the elastic sleeve is sleeved on the outer wall of the mandrel, the elastic sleeve is provided with a first cavity and a second cavity, the bottom of the first cavity , The bottom of the second cavity communicates with both ends of the through hole to form a cavity, the cavity contains liquid, and the shell is sleeved on the outside of the elastic sleeve.
  • the Chinese invention patent discloses a variable stiffness swing arm node.
  • the swing arm node includes a jacket, a main spring, an auxiliary spring, and a mandrel.
  • the surface of the mandrel is wound with oil.
  • the main spring is vulcanized into one body by rubber and metal parts.
  • the metal part of the main spring is press-fitted with the mandrel.
  • Both ends of the main spring are press-fitted with auxiliary springs.
  • the auxiliary springs are also corresponding to the main spring.
  • Two parts of rubber and metal parts are vulcanized into one body.
  • the main spring and auxiliary spring are press-fitted with a jacket.
  • the mandrel is the axis of symmetry. Two oil cavities are set between the jacket and the main spring. The two ports of the oil pipeline are connected.
  • the product is required to provide greater axial rigidity and achieve a greater dynamic-to-static ratio. In this way, the existing liquid rubber composite node in the above-mentioned patent documents is difficult to realize.
  • the technical problem to be solved by the present invention is to provide a method for forming a liquid rubber composite node with a pipe body flow channel in view of the defects in the prior art, which can provide a smaller radial rigidity and a larger axial rigidity , To achieve a larger dynamic and static ratio, thereby optimizing the product performance of the liquid rubber composite node.
  • the technical solution adopted by the present invention is: a method for forming a liquid rubber composite node with a pipe body flow channel, which is to add a middle spacer sleeve between the outer sleeve and the mandrel, and the middle spacer sleeve and The mandrels are glued together by rubber vulcanization, and then the integrated intermediate sleeve and the mandrel are assembled into the outer jacket; the pipe body runner is set in the mandrel, and multiple spaces are hollowed out on the intermediate sleeve.
  • the rubber and the plurality of spaces are used to form a plurality of mutually independent liquid cavities, the plurality of liquid cavities are provided with liquid and the plurality of liquid cavities are communicated with each other through the pipe flow channel.
  • the method for forming the flow passage of the pipe body is as follows: the mandrel is arranged in two parts, the inner part is the mandrel body, and the outer part is the mandrel casing, and the mandrel body is assembled into the mandrel casing; Runner grooves are arranged on the outer circumferential surface, and the runner grooves are distributed around the outer circumferential surface of the mandrel body. Along the length direction of the runner groove, a pipe body is arranged in the runner groove. The two ends of the pipe body are respectively connected with a plurality of The liquid cavities are connected.
  • the arrangement of the runner grooves is the first arrangement or the second arrangement:
  • the first arrangement is to directly set the runner groove on the outer peripheral surface of the mandrel body, then place the pipe body in the runner groove, and then assemble the mandrel body into the mandrel casing. After assembly, the mandrel The inner peripheral surface of the jacket directly contacts the pipe body, pressing the pipe body in the runner groove;
  • the second arrangement method is to first set a groove area on the outer peripheral surface of the mandrel body, and then set a runner groove on the bottom surface of the groove area, and then place the pipe body in the runner groove, and then set the groove in the groove.
  • a pressure sleeve is arranged in the groove area, and the pipe body is compressed in the flow channel groove by the pressure sleeve.
  • the specific method for forming the liquid cavity is as follows: first dig out a plurality of spaces in the intermediate spacer sleeve, the space is similar to a through hole, and its outer and inner ends are both open; when the opening of the inner end of the space is sealed . After the mandrel and the intermediate sleeve are vulcanized and bonded together by rubber, the vulcanized rubber is used to block the inner end port of the space; when the outer end of the space is sealed, it is in the middle after hollowing out The spacer is covered with an arc-shaped cover plate, and the outer end port of the space is blocked by the arc-shaped cover plate; using the above method, multiple spaces are formed into multiple liquid cavities.
  • a convex block protruding toward the mandrel is provided on the inner circumferential arc surface of the arc-shaped cover plate; the convex block is used to contact the rubber to provide nonlinear rigidity, and the convex block contacts the mandrel to form a hard stop limit. .
  • the intermediate spacer adopts an integral spacer or a multi-petal spacer
  • the liquid cavity is provided with two
  • the two liquid cavities are symmetrically distributed on the intermediate spacer with respect to the axis of the intermediate spacer.
  • the intermediate spacer adopts a multi-petal spacer
  • a gap E between the two end faces of each adjacent petal that are close to each other.
  • the gap E disappears.
  • the two end faces of each petal that are close to each other are in contact with each other; before assembly, there is also an opening gap F in the rubber and at each gap E. After assembly, the opening gap F is filled with deformed rubber , Making the opening gap F disappear.
  • the non-equal design is adopted, that is, the center point of the intermediate spacer is taken as the circle point, and the center angles of the multiple arc-shaped petals are not equal;
  • the center angle of the hollowed-out arc-shaped petal body is greater than the center-angle of the arc-shaped petal body that is not hollowed out.
  • the mandrel jacket is formed by the following method: a mandrel jacket is formed by taking the central axis I of the mandrel jacket as the bus bar, with the two ends high, and the saddle-shaped surface J of the middle bottom as the rotating surface;
  • the rubber between the mandrel outer sleeve and the intermediate sleeve is divided into two parts, one part is the middle rubber, and the other part is the end rubber at both ends of the middle rubber.
  • the thickness of the middle rubber along the radial direction of the mandrel is set as the radial thickness H1
  • the thickness of the end rubber along the axial direction of the mandrel is set to the axial thickness H2;
  • the radial stiffness and axial stiffness of the node can be adjusted by adjusting the radial thickness H1 and the axial thickness H2.
  • a step is formed on the intermediate spacer sleeve, the step is arranged in a full circle along the outer end of the space, and the arc-shaped cover plate covers the step.
  • the stepped portion is a one-stage step.
  • the rubber is encapsulated on the stepped portion, and then an arc-shaped cover is covered on the stepped portion, so that the arc-shaped cover is in contact with the encapsulation on the stepped portion.
  • the step part is a multi-level step, including a first-level outer spacer step part and a multi-level inner spacer step part; when assembling, the rubber encapsulation is applied to the multi-level inner spacer step part, and then the step part is covered
  • the arc-shaped cover plate makes the arc-shaped cover plate and the step part of the first-level outer spacer sleeve adopt an interference fit connection, and the arc-shaped cover plate and the multi-level inner spacer sleeve step are connected by a rubber over-pressure fitting method.
  • the step part is a two-stage step, with a spacer step part one and a spacer step part two, the spacer step part one is the outer spacer step part, and the spacer step part two is the inner spacer step part, rubber encapsulated
  • the arc-shaped cover plate in contact with the step is also correspondingly arranged in a multi-step shape, including the cover step 1 and the cover step 2; on the step during the assembly process
  • the stepped part of the cover plate and the stepped part of the spacer are connected by interference fit, and the stepped part of the cover plate and the stepped part of the spacer are connected by rubber over-pressure fitting.
  • a glue groove is provided on the stepped part of the spacer.
  • solid glue is applied to the glue groove.
  • the stepped part of the cover plate and the stepped part of the spacer are connected by interference fit.
  • the solid glue is also in contact with the stepped part of the cover plate.
  • a sealing groove is provided on the stepped part of the spacer.
  • the sealing ring is assembled in the sealing groove.
  • the stepped part of the cover plate and the stepped part of the spacer are connected by interference fit, The sealing ring is also compressed in the sealing groove by the stepped part of the cover plate.
  • a cover sealing groove is provided on the second cover step, and when the rubber is encapsulated on the second spacer step part, a sealing protrusion is formed on the rubber.
  • the second cover step and the spacer step part are formed during the assembly process. When the two are connected by rubber over-pressure fitting, the sealing protrusion is located in the sealing groove of the cover plate and is pressed into contact by the sealing groove of the cover plate.
  • a glue groove is provided on the stepped part of the spacer.
  • solid glue is applied to the glue groove.
  • the stepped part of the cover plate and the stepped part of the spacer are connected by interference fit.
  • the solid glue is also in contact with the stepped part of the cover plate.
  • a sealing groove is provided on the stepped part of the spacer.
  • the sealing ring is assembled in the sealing groove.
  • the stepped part of the cover plate and the stepped part of the spacer are connected by interference fit, The sealing ring is also compressed in the sealing groove by the stepped part of the cover plate.
  • the beneficial effect of the present invention is that the present invention forms a plurality of independent liquid cavities capable of storing liquid by hollowing out and vulcanizing the rubber in the intermediate spacer sleeve, and then setting a pipe body flow channel in the mandrel to utilize the pipe body flow
  • the channel connects multiple liquid cavities to form a liquid rubber composite node, which can provide a smaller radial stiffness and a larger axial stiffness, and achieve a larger dynamic-to-static ratio, thereby optimizing the product performance of the liquid rubber composite node.
  • the pipe body is used to divert the liquid, so that the liquid can only flow along the length of the pipe body without cross flow, which further improves the reliability of the product.
  • the liquid cavity can be formed smoothly and the product quality is ensured.
  • the intermediate spacer is designed as a multi-petal spacer, through the design of its assembly structure and process, it is ensured that after the interference assembly is completed, the two adjacent end faces of each adjacent petal are in direct contact with each other. There will be rubber involved, which can further improve the performance of the product after assembly.
  • the middle spacer is designed as a multi-petal spacer, the middle spacer is designed with a non-equal division design, which enlarges the volume space of the liquid cavity as much as possible.
  • the rubber between the intermediate spacer sleeves is divided into intermediate rubber and end rubber, and the radial stiffness and axial stiffness of the node are adjusted by adjusting the radial thickness of the intermediate rubber and the axial thickness of the end rubber.
  • FIG. 1 is a schematic diagram of a cross-sectional structure of a node along the radial direction of the mandrel in Embodiment 1 of the present invention
  • Figure 2 is a schematic sectional view of the structure taken along the line A-A in Figure 1;
  • FIG. 3 is a schematic sectional view of the structure of the mandrel in FIG. 2;
  • Fig. 4 is a schematic diagram of an enlarged structure of part D in Fig. 2;
  • Figure 5 is an enlarged schematic view of the structure at part D in Figure 2 when the upper surface of the mandrel is not covered with glue;
  • FIG. 6 is a schematic cross-sectional structure diagram of the intermediate spacer along the radial direction of the mandrel in Embodiment 1 of the present invention.
  • Fig. 7 is a schematic diagram of an enlarged structure of part G in Fig. 1;
  • Fig. 8 is a schematic diagram of an enlarged structure of part H in Fig. 1;
  • Fig. 9 is an enlarged schematic diagram of the H part in Fig. 1 when the intermediate spacer sleeve is not assembled in the outer jacket;
  • Fig. 10 is a schematic cross-sectional structure diagram of an arc-shaped cover plate in Fig. 6;
  • FIG. 11 is a partial cross-sectional structure diagram of a node located at one end of the outer sleeve and cut along the axial direction of the mandrel in Embodiment 2 of the present invention
  • FIG. 12 is a schematic diagram of a partial cross-sectional structure of a node taken along the axial direction of the mandrel in Embodiment 3 of the present invention.
  • Fig. 13 is a schematic diagram of an enlarged structure of part N in Fig. 12;
  • FIG. 14 is a partial cross-sectional structure diagram of a node located at the step portion of the intermediate spacer sleeve, which is cut along the axial direction of the mandrel in Embodiment 4 of the present invention;
  • FIG. 15 is a partial cross-sectional structural diagram of a node located at the step portion of the intermediate spacer sleeve, which is cut along the axial direction of the mandrel in Embodiment 5 of the present invention;
  • FIG. 16 is a partial cross-sectional structure diagram of a node located at the step of the intermediate spacer sleeve, which is cut along the axial direction of the mandrel in Embodiment 6 of the present invention;
  • FIG. 17 is a partial cross-sectional structure diagram of a node located at the step portion of the intermediate spacer sleeve, which is cut along the axial direction of the mandrel in Embodiment 7 of the present invention;
  • FIG. 18 is a partial cross-sectional structural diagram of a node located at the step portion of the intermediate spacer sleeve, which is cut along the axial direction of the mandrel in Embodiment 8 of the present invention;
  • Example 1 As shown in Figure 1 and Figure 2, a method for forming a liquid rubber composite node with an inner groove channel is to add a middle spacer sleeve 3 between the outer sleeve 1 and the mandrel 2, and the middle spacer sleeve 3 and the mandrel 2 are vulcanized and bonded together by the rubber 4, and then the integrated intermediate spacer and the mandrel are assembled into the outer sleeve 1; the pipe body flow channel is set in the mandrel 2, and the intermediate spacer 3 is hollowed out A plurality of spaces are formed.
  • the rubber 4 and the plurality of spaces are used to form a plurality of independent liquid cavities 5, and the plurality of liquid cavities 5 are provided with liquid (not shown in the figure) and a plurality of liquids
  • the cavities 5 are communicated with each other through the pipe flow channel 6.
  • the liquid rubber composite node formed by the above method can provide smaller radial stiffness and greater axial stiffness, realize a larger dynamic-to-static ratio, and optimize the product performance of the liquid rubber composite node.
  • the method for forming the flow passage of the pipe body is as follows: the mandrel 2 is arranged in two parts, the inner part and the outer part.
  • the inner part is the mandrel body 211
  • the outer part is the mandrel jacket 212. Fit into the mandrel casing 212.
  • a runner groove 611 is provided on the outer peripheral surface of the mandrel body 211, and the runner grooves 611 are spirally distributed on the outer peripheral surface of the mandrel body 211.
  • the runner grooves 611 may not be spirally surrounded. Instead, it is set in other shapes.
  • a pipe body 612 is arranged in the runner groove 611, that is, the pipe body 612 is also distributed around the outer peripheral surface of the mandrel body 211, and the pipe body 612 can be made of copper pipe or other materials
  • the tube has a certain degree of flexibility.
  • the runner groove 611 plays a role in positioning the tube body 612 and facilitates the assembly of the tube body 612. Both ends of the tube body 612 are respectively communicated with a plurality of liquid cavities 5.
  • the shape of the pipe body 612 on the outer peripheral surface of the mandrel body 211 can also be adjusted by conversing the shape of the surrounding state of the flow channel groove 611.
  • the pipe body is used to divert the liquid, so that the liquid can only flow along the length of the pipe body without cross flow, which further improves the reliability of the product.
  • runner groove 611 There are two ways to arrange the runner groove 611. One is to directly set it on the outer peripheral surface of the mandrel body 211, and then place the tube body 612 in the runner groove 611, and then the mandrel body 211 is interference-fitted to the core.
  • the inner peripheral surface of the mandrel jacket 212 directly contacts the pipe body 612, pressing the pipe body 612 in the runner groove 611; the other is the one used in this embodiment (as shown in the figure) 4), first set the groove area 7 on the outer circumference of the mandrel body 211 where the runner groove is needed, that is, a full circle is provided on the outer circumference of the mandrel body 211 along the circumference of the mandrel body 211
  • the runner groove 611 is set on the groove bottom surface 711 of the groove area 7, which actually sinks the arrangement area of the runner groove 611, when the pipe body 612 is placed in the runner groove 611
  • a compression sleeve 8 is set in the groove area 7 to press the tube body 612 into the runner groove 611, which can facilitate the assembly and positioning of the tube body, and also ensure the stability of the tube body during operation.
  • the pressing sleeve 8 is set in the groove area 7 to press the tube body 612 into the
  • two liquid cavities there are two liquid cavities (the upper liquid cavity located above and the lower liquid cavity located below in Figure 1).
  • the liquid cavities need to be connected to ensure that the liquid can flow back and forth between the two liquid cavities.
  • two compression sleeve through holes 811 are further provided on the compression sleeve 8
  • two sleeve through holes 2121 are provided on the mandrel sleeve 212 at positions corresponding to the compression sleeve through holes 811, and the sleeve through holes 2121 are provided.
  • one end of the pipe body 612 extends into a pressure sleeve through hole 811 and is fixed to the one pressure sleeve through hole 811, so that one end of the pipe body 612 passes through an outer sleeve through hole 2121 Connected to a liquid cavity 5, the other end of the tube body extends into the other pressure sleeve through hole and is fixedly connected with the other pressure sleeve through hole 811, so that the other end of the tube body passes through another outer sleeve.
  • the hole communicates with another liquid cavity 5.
  • both ends of the pipe body are respectively welded in the two pressure sleeve through holes 811.
  • a weld 9 is left at the end of the pipe body.
  • the outer peripheral surface of the compression sleeve 8 and at the end of the tube body are also provided with an annular sealing groove, and the annular sealing ring 10 is placed in the annular sealing groove.
  • the diameter of the tube body 612 is set to C1
  • the diameter of the outer casing through hole 2121 is set to C2, then C1 ⁇ C2, which reduces the difficulty of assembly.
  • the method of forming the liquid cavity is as follows: first dig out two spaces on the intermediate spacer sleeve 3 (the spaces X1 and X2 in Figure 6), the space X1 and the space X2 are similar In the shape of a through hole, both the outer and inner ends are open.
  • the end of the space on the side of the mandrel 2 is regarded as the inner end
  • the end of the space on the side away from the mandrel 2 is regarded as the outer end
  • it is necessary to seal the openings at both ends of each space so that each space is formed independently of each other.
  • rubber 4 is used for sealing.
  • a stepped portion 12 is formed on the intermediate spacer sleeve 3 around the outer end opening of the space.
  • the stepped portion 12 is a first-level stepped portion, and the stepped portion 12 is arranged along the outer end opening of the space.
  • the arc-shaped cover plate 11 covers the stepped portion 12, and one function of the stepped portion 12 is to serve as a positioning structure, facilitating the positioning and assembly of the arc-shaped cover plate 11.
  • the mandrel, the outer sleeve, the pressing sleeve, the intermediate spacer sleeve and the arc-shaped cover plate can all be made of metal materials.
  • the rubber 4 is encapsulated on the step portion 12, where the package is
  • the glue thickness can be set according to the actual situation.
  • the intermediate spacer can be an integral spacer or a multi-petal spacer.
  • a multi-petal spacer is used, such as a two-petal, three-petal, etc. structure.
  • this embodiment uses a four-petal spacer, as shown in FIG. 6, this embodiment
  • the middle spacer sleeve 3 is a four-petal spacer, including a left arc-shaped valve body 311, a right-curved valve body 312, an upper arc-shaped valve body 313, and a lower arc-shaped valve body 314.
  • the four petals are circumferentially enclosed Form a spacer.
  • the opening gap F is a U-shaped groove, and the opening of the U-shaped groove faces the gap E, and the two sides of the U-shaped groove extend the radial extension of the spacer sleeve. Respectively coincide with the two end faces of the two petals at the gap E, which are close to each other, the depth of the U-shaped groove is designed according to the actual assembly conditions.
  • the non-equal design is adopted, that is, the center point of the intermediate spacer is the circle point.
  • the center angles of the multiple arc-shaped petals are not equal.
  • the arc of the upper arc-shaped valve body 313 and the center angle of the lower arc-shaped valve body 314 are both set to ⁇ , and the left arc-shaped valve
  • the center angles of the body 311 and the right arc-shaped valve body 312 are both set to ⁇ , and ⁇ > ⁇ .
  • the hollowed out arc-shaped petals are the arc of the upper arc-shaped petal 313 and the lower arc-shaped petal 314. After hollowing out, they will follow the arc and the lower arc of the upper arc-shaped petal 313.
  • the direction of the petal body 314 (that is, the Y direction in the figure) is the empty direction, and the direction along the left arc-shaped petal body 311 and the right arc-shaped petal body 312 (that is, the X direction in the figure) is the real direction.
  • the radial rigidity in the air direction can be reduced.
  • ⁇ is 120 degrees
  • ⁇ is 60 degrees.
  • the hollowed-out petal body can be any petal body in the multi-petal intermediate spacer sleeve.
  • the arc and lower arc-shaped petals of the upper arc-shaped petal body 313 are arranged symmetrically with respect to the axis of the mandrel 2.
  • the body 314 is hollowed out to form a liquid cavity.
  • a convex block 111 protruding toward the mandrel 2 is provided on the inner circumferential arc surface of the arc-shaped cover plate 11.
  • the convex block 111 and the rubber The 4-phase contact provides nonlinear stiffness characteristics.
  • the bump 111 contacts the mandrel 2 to form a hard stop limit protection function.
  • the lower end peripheral surface of the protrusion 111 near one end of the mandrel 2 is set as an arc-shaped surface, and the curvature of the arc-shaped surface matches the curvature of the mandrel.
  • the volume of the bump 111 can be designed according to actual needs. By controlling the size of the bump 111, the volume of the liquid cavity 5 can be controlled, so that the node becomes the node of the large-volume liquid cavity and the node of the small-volume liquid cavity. node.
  • the nodes of the large-volume liquid cavity can hold more liquid, while the nodes of the small-volume liquid cavity can provide greater dynamic stiffness characteristics under the same stiffness.
  • the volume of the bump 111 is designed to be relatively large, so that the node becomes a node of a small-volume liquid cavity.
  • the gap between the lower end peripheral surface of the protrusion 111 near the end of the mandrel 2 and the mandrel 2 is set to I, and the nonlinear stiffness curve can be adjusted by adjusting the size of the gap I.
  • protrusions 111 are provided on the inner circumferential arc surfaces of the two arc-shaped cover plates 11, and the two protrusions 111 are respectively located in the two liquid cavities 5.
  • the mandrel jacket 212 is formed by taking the central axis K of the mandrel jacket 212 as the generatrix, and the saddle-shaped surface J with high ends and the middle bottom as the rotating surface.
  • the mandrel jacket 212 is set so that the rubber 4 between the mandrel jacket 212 and the intermediate spacer sleeve 3 is divided into two parts, one part of the rubber is the middle section rubber 413, and the other part is the end located at both ends of the middle section rubber 413
  • the thickness of the part rubber 414 and the middle section rubber 413 in the radial direction of the mandrel is set to the radial thickness H1, and the thickness of the end rubber 414 in the axial direction of the mandrel is set to the axial thickness H2.
  • the middle section rubber 413 mainly provides radial stiffness
  • the end rubber 414 mainly provides axial stiffness. In this way, the radial stiffness and axial stiffness of the node can be adjusted by adjusting the radial thickness H1 and the axial thickness H2. .
  • a liquid injection hole 13 is also provided on the mandrel 2, and the liquid injection hole 13 communicates with the liquid cavity 5.
  • liquid is injected into the liquid cavity 5 through the liquid injection hole 13 and then sealed.
  • one end of the liquid injection hole 13 communicates with the outside world, and the other end of the liquid injection hole 13 communicates with the liquid injection through hole 2122 opened on the mandrel casing 212, and the liquid injection is connected to the outside.
  • the hole 2122 is in communication with a liquid cavity 5, so that the other end of the liquid injection hole 13 is finally connected with a liquid cavity 5 to facilitate liquid injection.
  • Embodiment 2 As shown in FIG. 11, compared with Embodiment 1, the difference of this embodiment is that the two ends of the jacket 1 in this embodiment are designed with flanging and crimping. A continuous stepped portion 14 and a stepped portion 15 are provided on one end of the intermediate spacer sleeve 3. The stepped portion 14 is located at the lower position (close to the mandrel), and the stepped portion 15 is located at the upper position (far away from the mandrel). Position), the end surface of one end of the outer jacket 1 is flush with the lateral vertical surface of the step two 15 along the vertical direction. The end sealing ring 20 is placed on the step two 15.
  • the end sealing ring The height of 20 is higher than the height of the second step 15, that is, the end sealing ring 20 is located between the second step 15 and the outer jacket 1.
  • An outer sleeve flanging portion 112 is extended on one end surface of the outer sleeve 1.
  • the end seal ring 20 is pressed tightly by the outer sleeve flanging portion 112 and the end seal ring 20 is used to seal the outer sleeve 1
  • the gap P at the end of the contact surface with the intermediate spacer sleeve 3 further increases the sealing performance of the node.
  • the outer casing flanging portion 112 is flanged to the lateral vertical surface of the step portion 14 so that the step portion 14 is used to perform flanging positioning for the flanging operation. After the flanging operation, a gap T is left between the end of the outer flanging portion 112 and the horizontal bottom surface of the step portion 14.
  • the other end of the intermediate spacer sleeve 3 is also provided with a continuous stepped part 1 and a stepped part two.
  • a jacket flanging part is also extended, and the flanging at the other end of the intermediate spacer is crimped
  • the design structure is the same as the design structure of the flanging crimping at one end of the intermediate spacer sleeve described above, and will not be repeated here.
  • Embodiment 3 As shown in Figures 12 and 13, compared with Embodiment 1, the difference lies in: the stepped portion 12 provided on the intermediate spacer sleeve 3 is a two-stage step, with a spacer stepped portion 121 and a spacer The second sleeve step portion 122, the first spacer step portion 121 is located on the side close to the outer casing 1, that is, the outer side, and the second spacer step portion 122 is located on the side close to the mandrel, that is, the inner side.
  • the rubber encapsulation reaches to the second step 122 of the spacer, and the arc-shaped cover 11 at the contact with the step is correspondingly arranged in a multi-step shape, including the first cover 112 and the second 113.
  • the step 112 of the cover 112 and the step 121 of the spacer are connected by a metal interference fit, and the second 113 of the cover 113 is connected with the spacer 121.
  • the second stepped portion 122 is connected by rubber and metal over-press fit, that is, the second cover step portion 113 is used to press the rubber 4 on the second stepped portion 122 of the spacer. This setting avoids the problem of internal liquid leakage caused by the over-pressure fit between the metal and the rubber due to the slack of the rubber after long-term use.
  • Embodiment 4 As shown in Fig. 14, compared with embodiment 3, the difference is: a glue groove 18 is opened on the step part 121 of the spacer. Before assembly, solid glue 17 is applied in the glue groove 18, and the assembly In the process, when the stepped portion 112 of the cover plate and the stepped portion 121 of the spacer are connected by a metal interference fit, the solid glue also contacts the stepped portion 112 of the cover plate to further increase the sealing effect.
  • Embodiment 5 As shown in Figure 15, compared with Embodiment 3, the difference is: a sealing groove 19 is opened on the stepped portion 121 of the spacer. Before assembly, the sealing ring 20 is assembled in the sealing groove 19, and the assembly In the process, when the cover step 112 and the spacer step 121 are connected by a metal interference fit, the sealing ring 20 is also pressed by the cover step 112 in the sealing groove 19 to further increase the sealing effect.
  • Embodiment 6 As shown in FIG. 16, compared with Embodiment 3, the difference is that: the cover plate sealing groove 21 is opened on the cover plate step part 113, and the rubber is encapsulated on the spacer step part 122 , A sealing protrusion 415 is formed on the rubber 4. When the rubber 4 is pressed against the spacer step 122 by the cover plate step two 113 during the assembly process, the sealing protrusion 415 is located in the cover plate sealing groove 21 and is covered The plate sealing groove 21 is pressed into contact.
  • Embodiment 7 As shown in Figure 17, compared with Embodiment 3, the difference is that this embodiment can also combine the sealing forms in Embodiment 6 and Embodiment 4 to further enhance the sealing effect, that is, in the cover
  • the second plate step 113 is provided with a cover sealing groove 21.
  • a sealing protrusion 415 is formed on the rubber 4.
  • the cover plate step two 113 is used to remove the rubber 4
  • the sealing protrusion 415 is located in the sealing groove 21 of the cover plate and is pressed into contact with the sealing groove 21 of the cover plate.
  • a glue groove 18 is opened on the spacer step 121.
  • Embodiment 8 As shown in Figure 18, compared with Embodiment 6, the difference is that this embodiment can also combine the sealing forms in Embodiment 6 and Embodiment 5 to further enhance the sealing effect, that is, the sealing effect is
  • the second plate step 113 is provided with a cover sealing groove 21.
  • a sealing protrusion 415 is formed on the rubber 4.
  • the cover plate step two 113 is used to remove the rubber 4
  • the sealing protrusion 415 is located in the sealing groove 21 of the cover plate and is pressed into contact with the sealing groove 21 of the cover plate.
  • a sealing groove 19 is opened on the stepped part 121 of the spacer.
  • the sealing ring 20 is assembled in the sealing groove 19. During the assembly process, a metal interference fit is adopted between the stepped part 112 of the cover plate and the stepped part 121 of the spacer. When connected in a manner, the sealing ring 20 is also pressed in the sealing groove 19 by the step 112 of the cover plate, further increasing the sealing effect.
  • the present invention forms a plurality of independent liquid cavities capable of storing liquid by hollowing out and vulcanizing the rubber in the intermediate spacer, and then setting a pipe body flow channel in the mandrel, and using the pipe body flow channel to divide the multiple
  • the liquid cavities are connected to form a liquid rubber composite node, which can provide a smaller radial stiffness and a larger axial stiffness, and achieve a larger dynamic-to-static ratio, thereby optimizing the product performance of the liquid rubber composite node.
  • the pipe body is used to divert the liquid, so that the liquid can only flow along the length of the pipe body without cross flow, which further improves the reliability of the product.
  • the liquid cavity can be formed smoothly and the product quality is ensured.
  • the intermediate spacer is designed as a multi-petal spacer, through the design of its assembly structure and process, it is ensured that after the interference assembly is completed, the two adjacent end faces of each adjacent petal are in direct contact with each other. There will be rubber involved, which can further improve the performance of the product after assembly.
  • the intermediate spacer is designed as a multi-petal spacer, the intermediate spacer is designed with a non-equal division, which enlarges the volume space of the liquid cavity as much as possible.
  • the rubber between the intermediate spacer sleeves is divided into intermediate rubber and end rubber, and the radial stiffness and axial stiffness of the node are adjusted by adjusting the radial thickness of the intermediate rubber and the axial thickness of the end rubber.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Combined Devices Of Dampers And Springs (AREA)

Abstract

L'invention concerne un procédé de formation d'un nœud composite de caoutchouc liquide comportant un canal d'écoulement de conduit et un nœud. Le procédé de formation consiste à : placer un élément d'espacement intermédiaire (3) entre un manchon externe (1) et un mandrin (2) ; appliquer une vulcanisation à l'élément d'espacement intermédiaire (3) et au mandrin (2) au moyen de caoutchouc (4), de façon à les lier en tant qu'ensemble ; monter l'élément d'espacement intermédiaire (3) et le mandrin (2) intégrés en tant qu'ensemble dans le manchon externe (1) ; ménager un canal d'écoulement de conduit (6) dans le mandrin ; creuser l'élément d'espacement intermédiaire (3) pour former de multiples espaces ; et après la vulcanisation, utiliser le caoutchouc (4) et les multiples espaces pour former de multiples cavités de liquide indépendantes (5), des liquides étant amenés dans les multiples cavités de liquide (5), et les multiples cavités de liquide communiquant les unes avec les autres au moyen du canal d'écoulement de conduit (6). Un nœud composite formé par ledit procédé affiche une faible rigidité radiale et une haute rigidité axiale, et permet d'obtenir un grand rapport dynamique-statique, ce qui permet d'optimiser la performance du nœud composite de caoutchouc liquide.
PCT/CN2020/109803 2019-08-30 2020-08-18 Procédé de formation de nœud composite de caoutchouc liquide comportant un canal d'écoulement de conduit WO2021036866A1 (fr)

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US17/604,446 US11661990B2 (en) 2019-08-30 2020-08-18 Formation method for liquid rubber composite nodes with tubular flow channel
EP20857772.6A EP4023904A4 (fr) 2019-08-30 2020-08-18 Procédé de formation de noeud composite de caoutchouc liquide comportant un canal d'écoulement de conduit

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CN201910815522.XA CN110388401A (zh) 2019-08-30 2019-08-30 一种带有管体流道液体橡胶复合节点的形成方法及节点
CN201910815522.X 2019-08-30

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CN113048180A (zh) * 2021-04-22 2021-06-29 西南交通大学 可实现频变刚度特性的抗蛇行减振器及关节和应用
CN114251409A (zh) * 2021-12-01 2022-03-29 株洲时代新材料科技股份有限公司 一种马鞍型橡胶液力复合节点及其装配方法
CN115626191A (zh) * 2022-10-13 2023-01-20 株洲时代新材料科技股份有限公司 一种径向预压缩液体橡胶复合节点

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CN110469623B (zh) * 2019-08-30 2021-10-26 株洲时代瑞唯减振装备有限公司 一种带阻尼通孔的液体橡胶复合节点的形成方法及节点
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CN113048180A (zh) * 2021-04-22 2021-06-29 西南交通大学 可实现频变刚度特性的抗蛇行减振器及关节和应用
CN114251409A (zh) * 2021-12-01 2022-03-29 株洲时代新材料科技股份有限公司 一种马鞍型橡胶液力复合节点及其装配方法
CN115626191A (zh) * 2022-10-13 2023-01-20 株洲时代新材料科技股份有限公司 一种径向预压缩液体橡胶复合节点

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US11661990B2 (en) 2023-05-30

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